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At one point a few months ago I added a SuperTrapp
to my existing exhaust just to see if it would tame it a little. Cost me about
500RPM on the top end with little or no improvement in the sound
output.
Mike Wills
----- Original Message -----
Sent: Monday, January 05, 2009 11:49
AM
Subject: [FlyRotary] Re: 20B install
issues overcome
Earnest,
I believe that the SuperTrapp muffler is an example
of a band gap device and it worked well, if properly tuned.
I think the
large block idea has merit too, but you will have to allow enough thickness to
prevent the tubes that see the exhaust first to fight the harmonic vibration
and heat. Different size diamonds in the exhaust stream might also help fight
harmonics.
Bill Jepson
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